Project TAP (Tapping Achievement Potential) is designed to ameliorate deficits of mildly disabled preschoolers attending day care programs. Advantages of the TAP approach include a regular class environment, full day program, reduced training costs of day care teachers, and benefits of early intervention. Teachers in two demonstration classrooms were trained to assess children and plan instructional programs. Analysis of student gains in areas of gross and fine motor, visual perception, reasoning, receptive and expressive language, and social/emotional development revealed that project children equalled or surpassed the expected gain of normally developing children. Compared to nonproject Ss, project children exhibited mean gain scores consistently higher on the McCarthy Scales with greatest gain in general cognitive scores. (CL)